Core i7-7500U vs i5-8400
Description
The i7-7500U is based on Kaby Lake architecture while the i5-8400 is based on Coffee Lake.
Using the multithread performance as a reference, the i7-7500U gets a score of 86.9 k points while the i5-8400 gets 289.6 k points.
Summarizing, the i5-8400 is 3.3 times faster than the i7-7500U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-7500U gets a score of 86.9 k points while the i5-8400 gets 289.6 k points.
Summarizing, the i5-8400 is 3.3 times faster than the i7-7500U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
806e9
906ea
Core
Kaby Lake-U
Coffee Lake-S
Base frecuency
2.7 GHz
2.8 GHz
Boost frecuency
3.5 GHz
4 GHz
Socket
BGA1356
LGA 1151
Cores/Threads
2/4
6/6
TDP
15 W
65 W
Cache L1 (d+i)
2x32+2x32 kB
6x32+6x32 kB
Cache L2
2x256 kB
6x256 kB
Cache L3
4096 kB
9216 kB
Date
August 2016
September 2017
Mean monothread perf.
48.67k points
64.98k points
Mean multithread perf.
86.94k points
289.61k points
Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-7500U
i5-8400
Test#1 (Integers)
3.53k
4.08k (x1.16)
Test#2 (FP)
14.67k
14.96k (x1.02)
Test#3 (Generic, ZIP)
4.84k
4.98k (x1.03)
Test#1 (Memory)
6.26k
10.29k (x1.64)
TOTAL
29.29k
34.31k (x1.17)
Multithread
i7-7500U
i5-8400
Test#1 (Integers)
7.26k
21.54k (x2.97)
Test#2 (FP)
35.04k
85.13k (x2.43)
Test#3 (Generic, ZIP)
11.28k
28.24k (x2.5)
Test#1 (Memory)
5.69k
4.08k (x0.72)
TOTAL
59.27k
139k (x2.35)
AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i7-7500U
i5-8400
Test#1 (Integers)
20.74k
26.5k (x1.28)
Test#2 (FP)
18.41k
23.11k (x1.26)
Test#3 (Generic, ZIP)
3.98k
5.2k (x1.31)
Test#1 (Memory)
5.54k
10.16k (x1.83)
TOTAL
48.67k
64.98k (x1.33)
Multithread
i7-7500U
i5-8400
Test#1 (Integers)
37.34k
135.08k (x3.62)
Test#2 (FP)
35.79k
121.49k (x3.4)
Test#3 (Generic, ZIP)
8.34k
27.53k (x3.3)
Test#1 (Memory)
5.48k
5.5k (x1)
TOTAL
86.94k
289.61k (x3.33)
Performance/W
i7-7500U
i5-8400
Test#1 (Integers)
2489 points/W
2078 points/W
Test#2 (FP)
2386 points/W
1869 points/W
Test#3 (Generic, ZIP)
556 points/W
424 points/W
Test#1 (Memory)
365 points/W
85 points/W
TOTAL
5796 points/W
4455 points/W
Performance/GHz
i7-7500U
i5-8400
Test#1 (Integers)
5926 points/GHz
6626 points/GHz
Test#2 (FP)
5260 points/GHz
5778 points/GHz
Test#3 (Generic, ZIP)
1137 points/GHz
1300 points/GHz
Test#1 (Memory)
1584 points/GHz
2541 points/GHz
TOTAL
13907 points/GHz
16245 points/GHz
Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.
Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.
Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.
Test#1 (Integers) [points vs time]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.
If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.
If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.
Test#1 (Integers) [points vs time]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4